package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        // 构造redis的key , 规则dish_分类id
        String key = "dish_" + categoryId;
        List<DishVO> list = new ArrayList<>();
        try {
            list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        }catch (Exception e){
            log.info("redis查询异常：{}", e.getMessage());
        }
        // 查询redis中是否有数据

        if (list != null && list.size() > 0) {
            // 有数据直接返回
            return Result.success(list);
        }else{
            // 没有数据就查询数据库
            Dish dish = new Dish();
            dish.setCategoryId(categoryId);
            dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品

            list = dishService.listWithFlavor(dish);
            // 放入redis中
            try {
                redisTemplate.opsForValue().set(key, list);
            }catch (Exception e){
                log.info("redis操作异常：{}", e.getMessage());
            }

            return Result.success(list);
        }


    }

}
